Amazon Droughts are Affecting Climate

We don’t need more strip malls, more cars, more filthy industrial waste, more coal burning, or more stuff. We need to restore our eco-system and take care of what we have – both in the natural world and the manufactured world. The Amazon rainforest is a RAIN forest, but now it’s eco-system is having problems and it is having profound affects for all of us.

Major droughts in 2005 and 2010 cut into the Amazon’s ability to absorb carbon dioxide from the atmosphere. Drought reduces carbon-absorbing tree growth, and opens the door to more forest fires, which release carbon into the air. Seen here, a Peruvian section of Amazonia.

NPR Reports:
The world’s largest tropical forest, the Amazon, experienced something rare last year — a drought. It wasn’t the earth-cracking kind of drought that happens in the American Southwest or the Australian outback, but it did stunt or kill lots of trees.

It was the second such drought in the Amazon in five years, and forest scientists are trying to understand why these droughts are happening, and what their effects will be for the planet.

The 2005 drought in the Amazon was so unusual that scientists called it a “100-year event” — something supposed to happen only once a century.

“This is what’s quite alarming — that we’ve seen these two very unusual events,” says Simon Lewis, a forest ecologist at the University of Leeds in Great Britain, who watched both droughts hit the Amazon. Lewis notes that several of the computer models that calculate the effects of climate change do predict that parts of the planet are going to get drier.

“And those two unusual events are consistent with those predictions that suggest that the Amazon may be severely impacted over the next few decades by these droughts,” he says.

Writing in the journal Science, Lewis and his scientific team say the droughts are probably caused by the northward movement of especially warm water in the Atlantic Ocean. That shift carries moisture north, robbing big chunks of the Amazon of rain it normally would get.

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